The high polymer damping reinforcing plate has excellent damping and noise reduction effect, which can eliminate the vibration wave and noise caused by vibration and impact. The product is non-toxic, tasteless, non harmful volatile components, non corrosive, and is a typical green environmental protection product. High speed railway car manufacturing industry is also known as car damping rubber, car damping rubber, car damping and noise reduction reinforcement materials. This product is a kind of gray black sheet material, and it is a high-tech damping material refined by unique I technology. It is an ideal sound insulation and noise reduction material for car floor, car box, track, etc.

With the continuous development of rail transit in China, the running speed of trains has been greatly improved. At present, on the high-speed railway line, the running speed of trains has reached 300km / h, which has brought serious railway environmental noise pollution. The vibration and noise generated during the operation of trains not only affect the equipment, passengers and staff of the railway, but also affect the surrounding environment and residents. Therefore, taking corresponding measures to reduce the vibration and noise generated by the train is not only conducive to environmental protection, but also conducive to the sustainable and healthy development of railway traffic.

Railway noise is produced by a complex noise source system of various types of trains passing through the track. It is mainly divided into traction noise, wheel rail noise, aerodynamics noise and other aspects of noise. At present, a large number of CWR are used in China, which makes the wheel rail rolling noise become the main noise of railway. The results show that the main radiated noise frequency band of the wheel is more than 1500 Hz.

Measures to reduce wheel noise
According to the wheel rail noise theory, the main measures to reduce the wheel noise are:
1. The additional damping element, elastic element and floating mass are used to reduce the vibration of the main vibration system through the dynamic action generated by the connection on the main vibration system.
2. An isolation layer of polymer damping material is added between the wheel hub and the wheel spoke to form an elastic wheel.
3. In order to reduce the vibration speed of the wheel structure and the noise of the wheel, the shape of the wheel is optimized without affecting other requirements.
4. Reduce the sound radiation effect of wheels.